Featured amenities
Pet Friendly
About Mammoth Campground (Yellowstone)
Number of accommodations: 81
Nearby Activities & Attractions
Fishing
Seasonal information
2026 Season availability
Campground Amenities
Most popular amenities
Pet friendly
Pets and Policies
- Pet friendly
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Rates, Sites & Availability
81 Sites Available
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Site Details
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81 Sites Available
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Reviews (560)
What Guests Are Saying
Mammoth Campground is praised for its beautiful scenery, convenient location near Lamar Valley, and friendly hosts who maintain a clean environment. Many campers enjoyed the spacious and accessible sites, as well as the wildlife sightings, particularly elk and bison. However, some visitors noted that only one bathroom was open during their stay, leading to inconvenience, and there were occasional issues with campsite reservations. Overall, it's considered a great spot for exploring Yellowstone, especially in the off-season.
What Guests Are Saying
Mammoth Campground is praised for its beautiful scenery, convenient location near Lamar Valley, and friendly hosts who maintain a clean environment. Many campers enjoyed the spacious and accessible sites, as well as the wildlife sightings, particularly elk and bison. However, some visitors noted that only one bathroom was open during their stay, leading to inconvenience, and there were occasional issues with campsite reservations. Overall, it's considered a great spot for exploring Yellowstone, especially in the off-season.
Review Summary
Brad A
VerifiedJune 21, 2025 • Stayed at: Mammoth site #48, Loop: B
Fine. No problems. Camp host drives his little golf cart a lot.
Sharon H
VerifiedJune 19, 2025 • Stayed at: Mammoth site #18, Loop: A
Loved our stay in Yellowstone. Appreciated the availability of some sites two weeks out to fill a last minute trip of a lifetime for my grandchild. Thanks
Greg F
VerifiedJune 15, 2025 • Stayed at: Mammoth site #85, Loop: tent
We had a nice dive through site that gave us plenty of room and privacy.
Connie A
VerifiedJune 14, 2025 • Stayed at: Mammoth site #14, Loop: A
It’s close to LaMar valley where we like to go. Very friendly hosts
Gary H
VerifiedJune 14, 2025 • Stayed at: Mammoth site #11, Loop: A
Great hosts. Clean bathrooms.
Kirk M
VerifiedJune 14, 2025 • Stayed at: Mammoth site #14, Loop: A
Great views, quiet place, easy in and out, able to stay in the park for multiple days of park adventure.
Jessalyn B
VerifiedJune 12, 2025 • Stayed at: Mammoth site #69, Loop: Tent
Felt on top of the next group over even though I picked an end site. There were also people tented in the vegetation.. when there are distinct tent spots.
Mark B
VerifiedJune 12, 2025 • Stayed at: Mammoth site #45, Loop: B
Fantastic site. Camp hosts were great. Restrooms were clean.
joe h
VerifiedJune 11, 2025 • Stayed at: Mammoth site #69, Loop: Tent
No showers available. No wash room or dishwashing facilities. People cleaned their dishes in the bathroom sinks and left their mess. Restrooms need to be cleaned better. Park cops were called due to a domestic disturbance a few sites over. Site was level with access to potable water close by.
Leah W
VerifiedJune 9, 2025 • Stayed at: Mammoth site #68, Loop: A
Great experience, as always. Top-notch friendly and helpful campground hosts, clean sites with beautiful views, easy proximity to Gardiner. All the NPS sites at Yellowstone have their own charms, but Mammoth is always my favorite.
Location Mammoth Campground (Yellowstone)
Address:
Yellowstone National Park
Yellowstone, WY, 82190
United States
Latitude & Longitude: 44.9736 / -110.693
Elevation: 1842 feet
Policies & Rules
General
- Mammoth Campground is managed by the park. If you are looking for campgrounds managed by Yellowstone National Park Lodges (Fishing Bridge RV Park, Bridge Bay, Canyon, Madison, and Grant Village campgrounds), please visit the Yellowstone National Park Lodges Camping website.
- RV or Camper Unit Delivery Prohibited. The delivery or pick-up of out-of-park RVs or other camper unit rentals is prohibited.
- Notify the Campground of Late Arrivals. To notify campground of late arrival or cancellation please call 307-344-2289
- Parking. All wheeled vehicles including trailers and motorcycles must be parked on parking pads or established roadways, so as not to block or restrict traffic in campgrounds.
- Camping Occupancy Limits. Maximum occupancy is six people per site. Camp only in designated sites. Camping is limited to 14 days from July 1 through Labor Day and to 30 days the rest of the year parkwide. The 44 day camping limit includes both concession- and park-operated campgrounds.
- Wildlife/Bear Regulations. ~Keep all food and related items - beverages, cooking utensils, stoves, pet food and, empty or full, food and beverage containers such as coolers, ice chests, and water jugs - locked inside your vehicle or stored in a food storage box, unless in immediate use. Bear resistant food containers must be kept in a vehicle, in a hard-sided camping unit, or in a food storage box. ~All trash and garbage must be disposed of in the provided bear-proof trash cans. Do not leave food related trash or garbage unattended. ~Washing dishes or clothing at campground hydrants or spigots is prohibited. Carry all dishwater/wastewater to the restroom toilet for disposal.
- Campfires and Firewood. Wood and charcoal fires are permitted. Campfires are permitted only in established fire grates. Fires must be attended at all times. Only dead, down, and detached wood may be gathered. Wood should not extend outside the fire grate perimeter. Do not break limbs off of standing trees, living or dead. Drown campfires thoroughly with water to make sure they are completely out. NOTE: Wood and charcoal fires may be subject to special restrictions due to fire danger. Restrictions will be listed on campground information boards and on the park's Current Conditions page. Propane grills and stoves are not usually affected by fire restrictions.
- Quiet hours are strictly enforced. No loud audio devices or other noise disturbances will be allowed during this time. Generators are prohibited between the hours of 8:00 p.m. and 8:00 a.m. Generators must be turned off durng the day when campsite is not occupied by site renter.
- Stay on Boardwalks and Trails. All travel in thermal areas is restricted to NPS designated trails and boardwalks.
- Fishing. To fish within the park, people 16 years of age and older are required to purchase and carry on their person a Yellowstone National Park Fishing Permit (you may purchase in advance). To learn more about fishing regulations, visit the park's Catch a Fish web page.
- 30 ft RV limit. From November through April.
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Last updated: June 4, 2026
